Even Litecoin and BCash still suffers from scalability issues into the long term. Their strategy simply delays it; but their outdated architecture will never scale infinitely (limited only by internet bandwidth) like Nano could.
Also I really don't like how mining (that do not do any useful work, besides inefficient blockgeneration/validating and generating all that"waste heat") is so environmentally unsustainable too. Not something that I can support in the long-term.